third-party/leptonica/prog/fpixcontours.c
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* fpixcontours.c
*
* Generates and displays an fpix as a set of contours
*
* Syntax: fpixcontours filein [ncontours]
* Default for ncontours is 40.
*/
#include <string.h>
#include "allheaders.h"
static const char *fileout = "/tmp/fpixcontours.png";
int main(int argc,
char **argv)
{
char *filein;
l_int32 ncontours;
FPIX *fpix;
PIX *pix;
static char mainName[] = "fpixcontours";
if (argc != 2 && argc != 3) {
fprintf(stderr, "Syntax: fpixcontours filein [ncontours]\n");
return 1;
}
filein = argv[1];
if (argc == 2)
ncontours = 40;
else /* argc == 3 */
ncontours = atoi(argv[2]);
if ((fpix = fpixRead(filein)) == NULL)
return ERROR_INT(mainName, "fpix not read", 1);
pix = fpixAutoRenderContours(fpix, ncontours);
pixWrite(fileout, pix, IFF_PNG);
pixDisplay(pix, 100, 100);
pixDestroy(&pix);
fpixDestroy(&fpix);
return 0;
}